Finding the Fourth Proportional to 21,104,699.07, 29,101,356.89 and 13,748,891.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,104,699.07 : 29,101,356.89 = 13,748,891.33 : x
2. Step 2: Convert to fraction form
   21,104,699.07/29,101,356.89 = 13,748,891.33/x
3. Step 3: Cross multiply
   21,104,699.07x = 29,101,356.89 × 13,748,891.33
4. Step 4: Simplify right side
   21,104,699.07x = 400,111,393,290,649.94
5. Step 5: Solve for x
   x = 400,111,393,290,649.94/21,104,699.07
6. Step 6: Final answer
   x = 18,958,403.15